SU829129A1 - Plant for collecting and preparing watered oil - Google Patents

Description

(54) INSTALLATION FOR OIL SUPPORT AND PREPARATION OF ORIGINAL OIL

sent to the consumer. An additional chemical reagent is introduced into the ballast water recirculation pipeline via the device 12. demulsifier Water and oil are recycled by pumps 13 and 14, respectively, and excess ballast water is discharged through conduit 15 for additional treatment and disposal.

The installation works as follows.

The gas-liquid mixture from wells and group installations enters through the receiving conduit 9 into the separator 1 of the first separation stage, where the mixture is divided, into gas and water-oil emulsion, gas purified from dropping liquid, under the pressure of the separator is directed to the output gas pipeline 11 and further to the consumer. Water-oil on the emulsion from the separator 1 of the first stage enters the separator 2 of the second stage, where partial dehydration and degassing of oil under pressure close to the pressure of the first stage of separation occurs. The water-oil mixture is then sent to a sump 3, where the water is almost completely separated. The dehydrated oil is degraded in the end separator 4 under pressure close to atmospheric, and enters the pipeline 10 of commercial oil. Partially commodity. oil with residual demulgator from pipeline 10 is fed to pipeline 6 and pump 14 to ejector 7, by which low-pressure gas is piped by pipes 8 from separator 4 and supplied together with commercial oil to second-stage separator. The pump 14 and the ejector 7 provide an increase in pressure in the second stage separator to a value close to the pressure in the first stage and the extraction of additional gas volume from the second stage 2 through the pipeline. 11, which also allows to intensify the separation of water from oil due to an increase in pressure. In this way, two recirculation lines, LINE5, waste ballast ox

13 and line 6 oil with a pump 14. Water oil on the emulsion entering the inlet of the first stage separator 1 is treated with an additional chemical agent, a demulsifier, which is supplied by the device 12 to the recirculation line 5 of ballast water with the pump 13. For efficient destruction of oil emulsions with water with the early introduction of the demulsifier step input demulsifier in small doses gives a significant effect. This effect can (significantly increased if the optimum thermal and hydrodynamic conditions are maintained in the recirculation lines of oil and water).

The use of this installation allows to significantly increase the efficiency of oil preparation work and to improve gas utilization at the end stage of separation.

 the invention

Claims (2)

1. Installation for the collection and treatment of flooded oil, including .a successively installed separator for the first and second stages, a sump and an end separator, pipelines for recirculation of ballast water and oil, gas pipelines and an ejector, because with the aim of increasing the efficiency of the installation, the ejector is sized oil recirculation pipeline and is connected to the inlet of the second stage separator. 2. The installation according to claim 1, wherein the ballast water recirculation pipeline is provided with a device for introducing a chemical demulsifier chemical. Sources of information taken into account in the examination 1. Authors certificate of the USSR 435834, cl. On 01 D 19/00, 1972. 2. USSR author's certificate No. 582805, cl. On 01 D 17/02, 1975 (prototype).